Enhanced efficiency of carbon-based mesoscopic perovskite solar cells through a tungsten oxide nanoparticle additive in the carbon electrode

Zhou, Lin; Zuo, Yuhua; Mallick, Tapas Kumar; Sundaram, Senthilarasu

Abstract

This paper presents perovskite solar cells employed with WO3 nanoparticles embedded carbon top electrode. WO3 nanoparticles works as an inorganic hole-transport material (HTM) to promote the hole-extraction in the perovskite/carbon interface as revealed by efficiency, electrochemical impedance and external quantum efficiency measurements. As a result, a 40% enhancement of energy conversion efficiency has been achieved compared to the reference devices with the energy conversion efficiency of 10.77% under standard conditions. In addition, the Li-TFSI can modify the interface between electron-transport material (ETM) and perovskite, which may inhibit the recombination at the ETM/perovskite interface. The VOC of devices upon the modification of Li-TFSI is increased from 887.9 to 934.2 mV. This work highlights about the enlightenment of the effective performance of carbon-based mesoscopic PSCs by the introduction of HTM and the modification of interfaces.

Citation

Zhou, L., Zuo, Y., Mallick, T. K., & Sundaram, S. (2019). Enhanced efficiency of carbon-based mesoscopic perovskite solar cells through a tungsten oxide nanoparticle additive in the carbon electrode. Scientific Reports, 9, Article 8778. https://doi.org/10.1038/s41598-019-45374-x

• Journal Article Type: Article
• Acceptance Date: Jun 5, 2019
• Online Publication Date: Jun 19, 2019
• Publication Date: 2019
• Deposit Date: Mar 13, 2023
• Publicly Available Date: Mar 16, 2023
• Journal: Scientific reports
• Publisher: Nature Publishing Group
• Peer Reviewed: Peer Reviewed
• Volume: 9
• Article Number: 8778
• DOI: https://doi.org/10.1038/s41598-019-45374-x
• Keywords: nanoparticles, solar cells